My portoflio no longer works - Ekko Theme

Hello,
I would like to know if people have the same problem as me.
I have a WordPress site with the Ekko theme for a little over a year now. For some time now, my Portfolio section that I brought by import and that I created thanks to WP Bakery does not work anymore.
The page is still online with the thumbnails, but as soon as you click on one of them, a 404 error appears.
(The section where I created the boxes of my portfolio also disappeared).

Thanks in advance.

Site Web : Portfolio | Mes expériences & compétences | Yann Grosboillot Freelance

Hi,

Please contact your purchased theme author, theme author will assist you.

How to contact an author to get support or for any technical query:

Thanks

Thank you, however my code has expired so I cannot contact my author